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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-3350) Minor compaction failed due to out of order keys
Date Thu, 18 Dec 2014 06:00:23 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-3350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14251264#comment-14251264
] 

Josh Elser commented on ACCUMULO-3350:
--------------------------------------

Not sure. I think I saw it more than once, but not every time.

> Minor compaction failed due to out of order keys
> ------------------------------------------------
>
>                 Key: ACCUMULO-3350
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3350
>             Project: Accumulo
>          Issue Type: Bug
>          Components: tserver
>            Reporter: Josh Elser
>             Fix For: 1.6.3
>
>
> Ran BloomFilterIT against a real instance, saw the following error:
> {noformat}
> MinC failed (Keys appended out-of-order.  New key row %00;%c1;%e3;u&%01;%00;%00;%00;Z%c6;%17;:%cb;I
[] 1416451573338 false mc=1334556, previous key row k_0667277000:cq [] 1416451573338 false)
to create hdfs://localhost:8020/apps/accumulo/tables/2ds/default_tablet/F0003de5.rf_tmp retrying
...
> 	java.lang.IllegalStateException: Keys appended out-of-order.  New key row %00;%c1;%e3;u&%01;%00;%00;%00;Z%c6;%17;:%cb;I
[] 1416451573338 false mc=1334556, previous key row k_0667277000:cq [] 1416451573338 false
> 		at org.apache.accumulo.core.file.rfile.RFile$Writer.append(RFile.java:369)
> 		at org.apache.accumulo.tserver.Compactor.compactLocalityGroup(Compactor.java:504)
> 		at org.apache.accumulo.tserver.Compactor.call(Compactor.java:362)
> 		at org.apache.accumulo.tserver.MinorCompactor.call(MinorCompactor.java:96)
> 		at org.apache.accumulo.tserver.Tablet.minorCompact(Tablet.java:2071)
> 		at org.apache.accumulo.tserver.Tablet.access$4400(Tablet.java:174)
> 		at org.apache.accumulo.tserver.Tablet$MinorCompactionTask.run(Tablet.java:2158)
> 		at org.apache.accumulo.core.util.LoggingRunnable.run(LoggingRunnable.java:34)
> 		at org.apache.accumulo.trace.instrument.TraceRunnable.run(TraceRunnable.java:47)
> 		at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> 		at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> 		at org.apache.accumulo.trace.instrument.TraceRunnable.run(TraceRunnable.java:47)
> 		at org.apache.accumulo.core.util.LoggingRunnable.run(LoggingRunnable.java:34)
> 		at java.lang.Thread.run(Thread.java:745)
> {noformat}
> Never saw this before. No idea what happened or if it's related to the BloomFilters.



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